Which Harry Potter product line became so successful that it forced the author J.K. Rowling to create additional lore content specifically to support it?

The publishing industry has seen numerous successful products, but few have achieved the cultural and commercial impact of certain literary franchises. These book series transformed from simple publications into global brand empires with merchandise, theme parks, and multimedia adaptations. This poll tests your knowledge about one of the most significant brand phenomena in modern literature and its remarkable retail success story.

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• The wand replicas collection by Noble Collection
• Pottermore digital publishing platform
• The Wizarding World theme park attractions
• Harry Potter LEGO sets

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